Sound over DisplayPort with Radeon R9 380 and amdgpu does not work. The device is listed by lspci, the driver snd_hda_intel is loaded and the card is detected by ALSA. ALSA lists 6 possible devices but none of them works. No matter what device configuration I select in the KDE Phonon setup (HDMI 0 through HDMI 5) my monitor stays silent. If I try to by-bass PulseAudio and directly try to play an audio file with aplay I get the same negative result. # aplay -L null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server default Default Audio Device sysdefault:CARD=PCH HDA Intel PCH, ALC892 Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog Front speakers surround21:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 2.1 Surround output to Front and Subwoofer speakers surround40:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Digital IEC958 (S/PDIF) Digital Audio Output hdmi:CARD=HDMI,DEV=0 HDA ATI HDMI, HDMI 0 HDMI Audio Output hdmi:CARD=HDMI,DEV=1 HDA ATI HDMI, HDMI 1 HDMI Audio Output hdmi:CARD=HDMI,DEV=2 HDA ATI HDMI, HDMI 2 HDMI Audio Output hdmi:CARD=HDMI,DEV=3 HDA ATI HDMI, HDMI 3 HDMI Audio Output hdmi:CARD=HDMI,DEV=4 HDA ATI HDMI, HDMI 4 HDMI Audio Output hdmi:CARD=HDMI,DEV=5 HDA ATI HDMI, HDMI 5 HDMI Audio Output None of # aplay -D hdmi:CARD=HDMI,DEV=0 -fS32_LE -r 48000 -c 2 "test.mp3" ... # aplay -D hdmi:CARD=HDMI,DEV=5 -fS32_LE -r 48000 -c 2 "test.mp3" works. # lspci -v -s 01:00.1 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device aad8 Subsystem: Tul Corporation / PowerColor Device aad8 Flags: bus master, fast devsel, latency 0, IRQ 43 Memory at f7e60000 (64-bit, non-prefetchable) [size=16K] Capabilities: [48] Vendor Specific Information: Len=08 <?> Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Capabilities: [328] Alternative Routing-ID Interpretation (ARI) Kernel driver in use: snd_hda_intel
It is not a bug, just not working yet. We need to wait until AMD has got DAL (Display abstraction layer) into the kernel. See: https://bugs.freedesktop.org/show_bug.cgi?id=98809
